To insure proper primer adhesion to the substrate, all contaminates must be removed. Depending on the type of substrate to be prepared, different methods should be used. There are a variety of processes to prepare these substrates for primer and painting.
Sherwin-Williams primers are designed to go over various treatments (i.e., alclad or anodized aluminum, composite, fiberglass, magnesium, and stainless steel) as well as properly prepared metal and composite substrates. Please refer to recommendations for cleaning, application, and preparation before painting to the manufacturer of the treatment.
Shake primer component for 15 minutes before admixing.
Admix by Volume:
3 Parts Chrome Hazard Free Epoxy Primer CM0483787
1 Part Adduct CM0120787
1 Part Reducer CM0110787
Add the Adduct and Reducer into the Primer Component. Stir in slowly and allow a 15-minute induction time.
It is recommended to filter strain admixed primer before placing material in containers for spraying.
This product can be applied using conventional air spray HVLP, Graco electrostatic airspray or air assisted airless. See Chart on Page three for details regarding gun settings.
Dry times are based on the dry film thickness of 0.6-1.2 mils (15-30 microns).
Air Dry Times (75°F / 25°C and 50% RH):
To light sand or apply topcoat: 2 Hours 24 Hours*
Force Dry (140ºF [60ºC], 45% RH):
To light sand or apply topcoat: 20-30 Minutes
* If an intermediate primer or topcoat is not applied within 8 hours
of primer application, light scuff sanding using P240, P320 paper and/or red abrasive pads will be required for good intercoat adhesion.
NOTE: Lower temperatures, heavy film thickness, improper activator range selection and poor air movement will extend the dry time.
Use clean Ketone–type solvents such as CM0110308 MEK. Do not allow material to cure inside equipment.
One year shelf life is applicable only for materials stored in unopened and undamaged original factory filled containers.
Minimum Storage Temp: 40ºF / 4ºC
Maximum Storage Temp: 100ºF / 37ºC